Here were many grievances, and the barons set to work to redress them.
John then asked the barons for a charter that they on their part would keep the peace.
He followed this up by excommunicating the barons who had obtained it, and in the autumn of 1215 the inevitable war began.
He then seized, but soon released, Stephen Colonna and some other barons who had spoken disparagingly of him.
Taking heart, the exiled barons gathered together some troops, and war began in the neighbourhood of Rome.